Reagents
Chemicals and reagents. Fetal bovine serum (FBS) was purchased from Hangzhou Sijiqing Biological Engineering Material, Co., Ltd. (Beijing, China). Dulbecco’s modified Eagle’s medium (DMEM) was obtained from Gibco (Thermo Fisher Scientific, Inc., Waltham, MA, USA). Opti-Mem medium, Lipofectamine, dimethyl sulfoxide (DMSO) were purchased from Sigma-Aldrich (Merck KGaA, Darmstadt, Germany). Dip2a and Dip2c antibodies were purchased from Novus and Signalway Antibody, Inc. (USA).